Desktop and Shell UIQ: What are the requirements for Aero Glass?A: The minimum requirements for a graphics card to be Aero Glass compatible are:1. 64 mb of VRAM2. DirectX 9 Support with Pixel Shader 2 support3. AGP 4x or better

Also, keep in mind that Vista itself requires that your card support 1024x768x32 as a minimum. Detailed information concerning the graphics in Vista/Longhorn can be found at the Graphics Hardware and Driver Support website.

Here are the regular requirements:

Q: What are the system requirements for Vista?A: From the Windows Vista Capable PC Hardware Guidelines:Modern CPU512 MB of system RAMDirectX 9 capable graphics card